Solving Systems of Equations by Graphing and Inspection

What is the first step in solving a system by graphing?

• Write both linear equations in slope-intercept form
• Get x by itself
• Compare the slopes of both equations
• Write both equations in standard form

^{What is the solution?} 

• 1
• -2
• (1, 2)
• (1, -1)

What is the solution to the system?

• (0, 3)
• (1, -1)
• (-3, 1)
• (1, 3)

What is the solution?

• (2, 2)
• (3, 2)
• (3, 4)
• (2, 3)

Steffen graphed two lines in order to find the solution to a given system of equations.
What is the solution?

• (-3,-8)
• (-8,-3)
• (3,-8)
• (8,3)

What is the
slope-intercept form
of the equation
-8x+2y=4

• none
• y=2-4x
• y=4x+2
• y=4x-8y

If m=3 and b=6, what is the correct slope intercept equation?

• none
• y=3x-6
• y=3x+6
• y=6x+3

Write in slope intercept form
5x - 3y = -9

• y = (5/3)x - 3
• y = (5/3)x + 9
• y = (5/3)x + 3
• y = (3/5)x + 3

What are the steps for graphing a line?

• 1. Plot y-intercept

  2. count slope ratio plot second point

  3. Draw the line.

• 1. Make a table

  2. Plot slope

  3. Draw line

• 1. Plot two points

  2. Check slope

  3. Draw line

• 1. Draw line

  2. Hope it is right

Parallel Lines never intersect because...

• they have the same slopes. 
• they have the same y-intercept.
• they have different slopes.
• they have different y-intercepts.